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Objective:To investigate the application value of multi-slice spiral CT and abdominal ultrasound methods in the clinical diagnosis of acute appendicitis in children.Methods:We included 50 children patients who were pathologically diagnosed with acute appendicitis by the Department of Surgery, Dongyang Maternal and Child Health Hospital from August 2016 to August 2019. Before surgery, all patients underwent multi-slice spiral CT and abdominal ultrasound examinations. We recorded the time taken to complete multi-slice spiral CT and abdominal ultrasound examinations. Taking pathological results as the diagnosis criteria, we also calculated the coincidence rate of each imaging method.Results:The time we took to complete multi-slice spiral CT examination was shorter than that for abdominal ultrasound examination [(13.34 ± 3.86) minutes vs. (23.45 ± 4.77) minutes, t = 11.65, P < 0.05]. The coincidence rate of multi-slice spiral CT in identifying acute simple appendicitis, acute phlegmonous appendicitis, and acute gangrenous appendicitis was 95.24%, 95.00%, and 100.0%, respectively, and it was 71.73%, 70.00%, 88.89%, respectively for abdominal ultrasound examination. The coincidence rates in identifying acute simple appendicitis, acute phlegmonous appendicitis, and acute gangrenous appendicitis were significantly different between multi-slice spiral CT and abdominal ultrasound examinations ( χ2 = 4.29, 4.33, 1.06, all P < 0.05). Conclusion:Compared with abdominal ultrasound, multi-slice spiral CT is easier to operate, takes a shorter time in manipulation, provides more distinct images, and has a higher coincidence rate. Therefore, multi-slice spiral CT is of great diagnostic value for acute appendicitis in children.
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Objective To investigate the diagnostic value of VCA-IgA and multilayer enhanced spiral CT(MESCT) in the diagnosis of nasopharyngeal carcinoma.Methods Retrospective analysed the data on serum VCA-IgA test and MESCT of 385 patients with suspected nasopharyngeal disease,and the results were confirmed by surgery and pathology.Comparatively analysed the two methods in differential diagnosis of nasopharyngeal carcinoma and benign diseases.Finally,calculated the sensivity,speficity,positive predictive value,negative predictive value and accuracy in diagnosis of nasopharyngeal carcinoma.Results The positive rate of serum VCA-IgA,MESCT and combination of those two methods in naospharyngeal carcinoma were significantly higher than those in nasopharyngeal benign disease(P<0.05);combination of the methods significantly improve the sensitivity and accuracy in diagnosis of nasopharyngeal carcinoma,the specificity was lower than VCA-IgA,higher than MESCT alone.Conclusion Combination of serum VCA-IgA and MESCT were excellent strategy for diagnosis of nasopharyngeal carcinoma.
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Objective To probe the application and values of multilayer spiral CT three -dimensional recon-struction of post-processing in the diagnosis of bone tumor images .Methods 54 bone tumor patients in our hospital from August 2013 to August 2014 were taken as research objects and they were randomly into two groups with same members.Patients in observation group were conducted with multilayer spiral CT three -dimensional reconstruction diagnosis while patients in control group were conducted with MRI diagnosis .The diagnosis Results were analyzed . Result Diagnosis effective rate in observation group was 85.2%, with 59.3%in control group.Differences were evi-dent ( p<0.05) and had statistical significance .Conclusion Applying multilayer spiral CT three -dimensional re-construction of post-processing in diagnosis of bone tumor can improve diagnosis accuracy rate , and correctly judge disease extents , which can provide effective gist for clinical treatment .
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Objective:To investigate the diagnostic valuation of multilayer spiral CT pulmonary angiography in pulmonary embolism. Methods:A retrospective analysis 22 cases of pulmonary embolism were performed by 16 slice spiral CT diagnosis, The volume data of all cases were reconstructed for image post-processing with multi-plane reconstruction, maximum intensity projection and volume rendering. Results: Pulmonary embolism in patients with 22 cases, pulmonary artery and its branches remobilization of 22 cases were demonstrated well by MSCTA. Conclusion:The 16 slice spiral CT in the diagnosis of pulmonary embolism in a safe, rapid, high sensitivity, reliable diagnosis advantages, has been used as first choice of imaging diagnosis of pulmonary embolism diagnosis methods. It is worthy of wide clinical application.
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Objective To compare the clinical effect of radionuclide myocardial perfusion imaging(SPECT)and multilayer spiral CT coronary artery imaging(MSCT) in the diagnosis of coronsry artery disease(CHD).Methods The clinical data of 36 patients suspected with CHD and routine inspection of SPECT and MSCT were retrospectively analyzed.The diagnostic effects of two methods were compared.Results The sensitivity,specificity and the rate of accuracy of SPECT was 89.47％,94.12％,and 91.67％,respectively,while the sensitivity,specificity and the rate of accuracy of MSCT was 84.21％,94.12％,and 88.89％,respectively.There were no obvious difference in two groups (x2 =1.265,1.668,2.005,1.526,1.889,all P ＞ 0.05 ).Conclusion There was a high degree consistency on the diagnosis of CHD between SPECT and MSCT.In the application,combined with the two methods could improve the diagnosis of CHD.
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In multilayer spiral CT heart and coronary artery imaging, image data are acquired by ECG gating technology when heart beats slowest so as to restrain pulsation pseudo-image. ECG gating technology includes foresight ECG gating and retrospective ECG gating. The principle, methods and mutual image reconstruction are introduced in this paper.